2003
DOI: 10.1016/s0024-3205(02)02345-7
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Tramadol reduces the 5-HTP-induced head–twitch response in mice via the activation of μ and κ opioid receptors

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Cited by 15 publications
(8 citation statements)
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“…On the other hand, (−)-tramadol, which preferentially inhibit noradrenaline reuptake, induced a less potent, nonsignificant, antagonism of the number of head twitches. From these results, we suggest that μ-opioid receptor was involved in the effect of opiates, especially if we bear in mind that, in agreement with previous results (Sun et al 2003;Marek 2003), the effects of all opiates were blocked by naloxone.…”
Section: Discussionsupporting
confidence: 91%
See 1 more Smart Citation
“…On the other hand, (−)-tramadol, which preferentially inhibit noradrenaline reuptake, induced a less potent, nonsignificant, antagonism of the number of head twitches. From these results, we suggest that μ-opioid receptor was involved in the effect of opiates, especially if we bear in mind that, in agreement with previous results (Sun et al 2003;Marek 2003), the effects of all opiates were blocked by naloxone.…”
Section: Discussionsupporting
confidence: 91%
“…Our results, and some obtained by others (Sun et al 2003), demonstrate that typical (morphine) and atypical (tramadol, methadone, and levorphanol) opioids damp down the number of 5-HTP-induced head twitches after acute administration in a naloxone-reversible fashion, being atypical ones more effective. Therefore, both opioid and 5-HT2 receptors, which have a close correspondence distribution in both the rodent and primate neocortex, may be involved in those effects.…”
Section: Discussionsupporting
confidence: 83%
“…Tramadol is effective in animal models predictive of antidepressant efficacy; for example, tramadol decreases immobility in the forced swim test and reverses the physical and behavioral alterations induced by unpredictable chronic mild stress (Berrocoso et al, 2006; Rojas-Corrales et al, 2002; Rojas-Corrales et al, 2004; Rojas-Corrales et al, 1998; Yalcin et al, 2005; Yalcin et al, 2007; Yalcin et al, 2008). Additionally, tramadol blocks the head twitch response in mice induced by the serotonin precursor 5-HTP and the 5-HT 2A/2C agonist (+/−)-2,5-dimethoxy-4-iodophenyl-2-aminopropane (DOI) (Rojas-Corrales et al, 2007; Sun et al, 2003), suggested as an animal model for tics and Tourette syndrome (Dursun and Handley, 1996; Gaynor and Handley, 2001; Hayslett and Tizabi, 2005). …”
Section: Discussionmentioning
confidence: 99%
“…Die gleichzeitige Verabreichung mit 5-HTP rief bei Mäusen Kopfzucken hervor. Daraus wird der Schluss gezogen, dass durch die Kombination beider Medikamente die unerwünschten Wirkungen von Tramadol und 5-HTP verstärkt werden können [42]. Aus diesem Grund werden auch andere Opioid-Analgetika, z.…”
Section: Tramadolunclassified